Double-crank joint.



No. 843,090. PATENTED FEB. 5, 1907.

W. L. MORROW.

" DOUBLE CRANK JOINT. APPLICATION FILED HAR.22,1906.

ammo? William ilannmm UNITED STATES PATENT OFFICE.

WILLIAM L. MORROW, OF STOCKTON, CALIFORNIA.

. DOUBLE-FORIANK JOINT.

Specification of Letters Patent.

Patented Feb. 5, 1907.

.lpplication 4115a March 22. 1906- Serial No. 307,327.

To a, whom, it may concern:

Be it known'that I, WILLIAM L. Monaow,

- a citizen of the United States, and a resident and it-consists in the new and peculiar b'ear- 1 compact joint, yet one which w1l have-asufficient and stable bearing and a I- of Stockton, in the county ofYSan Joaquin and State of Caliiornia, have invented certam new and useful Improvements in Double-Crank Joints; and I do declare the following to be a full, clear, and exact descrip+ ti on of-the same, such as Willenable others.

skilled in the art towhich it appertainsito make and use the same, reference being had to the accompanying drawings, and. the

characters of reference. marked thereon,

which form apart of this specification. This invention relates to a double-crank joint, and particularly to that class used in connection with double two-cycle engines;

ings and in such other arrangement andconstruction of parts as appears by the following specification, my object being to reduce a friction. A

In the drawings similar characters of reference indicate corresponding parts in all the views.

Figure 1 designates a side elevation of my improved device. Fig. 2 is a top plan view of the same. Fig. 3 is a section taken on a linewatofFigZ.

1 designates the crank-shaft, and 2 the brass bearing-box thereof.

3 is one pitman or connecting rod provided with a Y 4., secured against the box 2 by means of a collar 5 the same being tightened by means of the usual keys 6.

7 represents the other pitman orconnect- 'mg'rod, said pitman-rod beingdisposed between the furcations of the first-named pitman-rod and having its outer faces in contact with the inner faces of the furcations of the pitman or connecting rod 3 and encirchng and hearing on the outside of the box 2 by I means of a collar 8 and tightened thereon by means of the usual keys 9, said box being made cylindrical between the sides of the Y 1 4 for this purpose. 7

Thus it is seen I have produced a doublecrank joint which does away with the necessity of having the bearings side by side; but

instead thereof I haveavbearing. within a bearing, thus permitting the; 'oint to becompact and less cumbersome ,t "anis newthe case-and to 'also'work on'a de'ad-cenitjer line,

as shown.

and preferred embodiment thereof.

Many changes may of'course' be made the details of construction without departing principle involved. and covered by .myclaim.. Having thus described. the device, Inow from the claim as new anduseful and desire to protect ,by Letters Patentthe following claim: Ina double-crank shaft, the crank, a b furcated pitman or connecting rod, a seml- I have now entered intoa 'descii'iption of my invention which describes the present v circular brass bearing carried by said pitman or connecting rod, a second pitmanor connecting rod fitting between the furcations of the first-named pitman or connecting rod, a

for tighteningeach of the pitmen or connect- 

